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In order to improve the oxidation resistance of high Nb containing TiAl alloys, the microstructure and oxidation behavior of NiCoCrAlY(Mo) coatings were investigated at 900°C for 100h by isothermal oxidation tests. The oxidation resistance of TiAlNbCr alloys was significantly improved after adding coatings and the oxidation resistance of NiCoCrAlY coating was slightly better than that of NiCoCrAlYMo...
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